18966696 has 128 divisors (see below), whose sum is σ = 59616000. Its totient is φ = 4902912.

The previous prime is 18966643. The next prime is 18966707. The reversal of 18966696 is 69666981.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82710 + ... + 82938.

It is an arithmetic number, because the mean of its divisors is an integer number (465750).

It is the magic constant of a 336 × 336 magic square.

Almost surely, 2^18966696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18966696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29808000).

18966696 is an abundant number, since it is smaller than the sum of its proper divisors (40649304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18966696 is a wasteful number, since it uses less digits than its factorization.

18966696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 287 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 18966696 is about 4355.0770372061. The cubic root of 18966696 is about 266.6841641296.

The spelling of 18966696 in words is "eighteen million, nine hundred sixty-six thousand, six hundred ninety-six".